| Business | Phone |
| Aerni Textil Inc 111 Hillshire Ct, Columbia 29212 | (803) 407-6143 |
| Allen Folline Assoc 4700 Devereaux Rd, Columbia 29205 | (803) 782-2010 |
| Alliance Consulting Engineers 1201 Main St, Columbia 29201 | (803) 779-2078 |
| Applied Control Technologies 810 Dutch Square Blvd # 395, Columbia 29210 | (803) 731-5544 |
| Applied Science & Engineering 24 Forest Lake Pl, Columbia 29206 | (803) 787-9700 |
| Buford Goff & Assoc Inc 1331 Elmwood Ave # 200, Columbia 29201 | (803) 254-6302 |
| C & S Consulting Group Inc 1107 Anthony Ave, Columbia 29201 | (803) 733-5176 |
| Civil Engineering Consulting 3020 Devine St # D, Columbia 29205 | (803) 779-0311 |
| Collins Consultants Inc 2500 Devine St # K, Columbia 29205 | (803) 765-1611 |
| Consoer Townsend Envirodyne 3800 Main St, Columbia 29203 | (803) 254-0000 |
| Cse Coastal Science 2615 Devine St, Columbia 29205 | (803) 799-8949 |
| E-Ware Inc 4611 Broad River Rd, Columbia 29210 | (803) 750-9029 |
| F & Me Consultants Inc 3112 Devine St, Columbia 29205 | (803) 540-1844 |
| Florence & Hutcheson Inc 2700 Middleburg Dr # 150, Columbia 29204 | (803) 254-5800 |
| Fuss & Oneill Inc 1419 Richland St, Columbia 29201 | (803) 376-6034 |
| Geometrics 136 Stonemark Ln, Columbia 29210 | (803) 783-9001 |
| Granie Engineering 121 Bombay Dr, Columbia 29209 | (803) 776-2000 |
| Hsmm 1122 Lady St, Columbia 29201 | (803) 779-1980 |
| Hussey Gay Bell & De Young Inc 1219 Assembly St # 300, Columbia 29201 | (803) 799-0444 |
| International Power Pros 302 Clearview Dr, Columbia 29212 | (803) 732-8628 |
| Jordan Jones & Goulding 1411 Gervais St, Columbia 29201 | (803) 312-8990 |
| Leon Campbell & Assoc Engr 2712 Middleburg Dr, Columbia 29204 | (803) 931-0566 |
| Lockwood Greene Engineers Inc 7400 Irmo Dr, Columbia 29212 | (803) 732-0544 |
| Mactec Engineering-Consulting 720 Gracern Rd # 132, Columbia 29210 | (803) 798-1200 |
| Mulkey Engineers & Consultants 701 Gervais St # 120, Columbia 29201 | (803) 798-1912 |
| Pantech Consulting Engineers 2712 Middleburg Dr # 207, Columbia 29204 | (803) 252-4155 |
| Pbs & J 220 Stoneridge Dr # 401, Columbia 29210 | (803) 806-8080 |
| Psi 1191 Atlas Rd # A, Columbia 29209 | (803) 776-6050 |
| Public Policy Group 1441 Main St # 1000, Columbia 29201 | (803) 540-2031 |
| R Johnson & Assoc 2764 Covenant Rd, Columbia 29204 | (803) 782-3439 |
| Roberson Engineering 1119 Enclave Way, Columbia 29223 | (803) 699-7747 |
| S2 Engineering & Consulting Columbia 29212 | (803) 407-0600 |
| Solid Solutions Columbia 29223 | (803) 865-1636 |
| Summit Engineering 146 Leisure Ln # C, Columbia 29210 | (803) 731-1200 |
| Triplett King & Assoc 2200 Greenpines Rd, Columbia 29206 | (803) 736-0711 |
| Wilbur Smith Assoc 1301 Gervais St # 1600, Columbia 29201 | (803) 758-4500 |
| Williams-Russell & Johnson Inc 807 Gervais St # 102, Columbia 29201 | (803) 779-1670 |
| Woolpert Llp 3800 Fernandina Rd # 100, Columbia 29210 | (803) 731-0261 |
| W K Dickson & Co Inc 501 Commerce Dr Ne, Columbia 29223 | (803) 786-4261 |